Maths practice for 10 year olds - page 41 of 65
Number of problems found: 1296
- Aquarium ichthyosaurs
There are five huge aquariums on an island in Jurassic World. At least two and at most six ichthyosaurs swim in each of them, with a different number in each aquarium. How many ichthyosaurs are there in total in all the aquariums? - Expression puzzle
Add a plus sign minus times divided by two brackets: 5 5 5 5 = 15 - Pair combinations
From 5 girls and four boys, we have to choose one pair, boy and girl. List all the pairs in which the individual boys will be. Attention, these are four examples. How many pairs are there? - Card sum puzzle
On the table lay eight cards with the numbers 2, 3, 5, 7, 11, 13, 17, and 19. Frank chose three cards. He added the numbers on them and found that their sum was 1 more than the sum of the numbers on the remaining cards. Which cards could have been left on - They held
A 100-metre race was held at school. Peter, Jan, Andrej, Radko, and Miro advanced to the final. Peter finished either second, third, or fourth. Jan was not the winner. Andrej finished one place behind Jan. Radko did not finish in second place. Miro finish - Number unknown Adela thought of the two-digit number. She added it to its ten times and got 407. What number does she think?
- Mystery number
A mystery number is between 800 and 920. No digits are the same. The difference between the numbers is 5. What is the mystery number? - Stone squares
Draw two squares made of stones. They use a total of 34 stones. What are the side lengths of the squares? - Fridays
Friday 13th is in 4 days. What day is today, and what day is it? - Strip length
What would be the length, in kilometers, of a strip assembled from one million squares, each with a side length of 1 mm? - 1000 km length
1000 km, how much is cm? - Line construction
Draw line AB if you know one of its extreme points and the center of line S. - Letter puzzle
Cryptarithmetic puzzle. Replace the letters with digits to get the correct sum: ŠKRZ KRK STRČ ______ PRST How many solutions does the problem have? - Tailor 5
A tailor uses 13/4m of cloth to stitch a skirt. How many meters of cloth is needed to stitch 16 skirts? - Thermometer
The thermometer showed -12 degrees Celsius in the morning. The temperature rose by 4 degrees and later increased by 2 degrees in the evening, fell by 5 degrees, and then fell 3 degrees. What end temperature does the thermometer show? - Hours
The lesson lasts 45 minutes. For the week, students have 18 lesson hours. How many are the actual hours? - Icecreams
Karthik bought 30 ice creams for his birthday. Two-fifths of them are chocolate ice creams. Find the number of chocolate ice creams he bought. - Cake and cone cost
Johnny got pocket money and wants to buy something good for it. If he purchased four cakes, it would increase by 0.50 euros. If he wanted to buy five cakes, he would miss 0.60 euros. He would spend all his pockets on the rest if he bought two cakes and th - Identity
123456789 = 100 Correct the given identity/equation only using three plus or minus signs. - Triangle side
The sides of the triangle are a = 5.5 cm b = 3.7 cm c =? The perimeter of the triangle is 11.6 cm. Calculate the length of the side c.
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